Windows DNS - Configuration Registry Operation Failed

Summary
The DNS server configuration consists of the settings that determine how the DNS server will function on a network and how those settings are stored and retrieved when they are needed.

Causes
The DNS server failed to perform a registry operation.

Resolutions

• Correct the registry access problem
• Check the following conditions:

    Ensure that the server system disk is not full or corrupted.

Ensure that the registry has not reached the maximum allowed size.

Ensure that the registry is not corrupted.

If any of these conditions exists, the DNS server cannot update configuration data in the registry until the problem is fixed.

Reload, restart, or reinstall

A zone failed to load properly. If an attempt to reload the zone is unsuccessful, restart the DNS Server service. If the DNS Server service cannot restart, reinstall the Domain Name System (DNS) server role.

To perform this procedure, you must have membership in Administrators, or you must have been delegated the appropriate authority.

If the DNS Server service started but could not load a zone, reload the zone.

To reload a zone:

1.On the DNS server, start Server Manager. To start Server Manager, click Start, click Administrative Tools, and then click Server Manager.

2.In the console tree, expand Roles, expand DNS Server, and then expand DNS.

3.Expand the server hosting the zone that failed to load, and then double-click the folder containing the zone.

4.Right-click the zone, and then click Reload.

If the zone still does not load, restart the DNS Server service.

To restart the DNS Server service:

1.On the DNS server, start Server Manager. To start Server Manager, click Start, click Administrative Tools, and then click Server Manager.

2.In the console tree, expand Roles, expand DNS Server, and then expand DNS.

3.Right-click the DNS server, click All Tasks, and then click Restart.

If the DNS Server service does not start, reinstall the DNS server role:

1.On the DNS server, start Server Manager, and then click Roles.

2.In Roles Summary, click Remove roles, and then follow the instructions in the wizard to remove the DNS server role.

3.If you are required to restart the computer, after the computer restarts, start Server Manager.

4.In Roles Summary, click Add roles, and then follow the instructions in the wizard to install the DNS server role.

External Knowledge Sources
http://technet.microsoft.com/en-us/library/dd349648(v=ws.10).aspx

WMI is unhealthy

Summary
The WMI health monitor tried to run the WMI query “select * from win32_operatingsystem” and encountered a WMI error(Error Number: -214721738).

Causes
WMI on this computer is unhealthy and cannot return any data from the query.

Resolutions
Ensure that the Windows Management Instrumentation (WMI) service is running on this computer.

Ensure that the Remote Procedure Call (RPC) service is running on this computer.

Ensure that the WMI Repository is consistent on the computer
• Open a Command Prompt
• Run the following command: “winmgmt /verifyrepository”
• If the repository is not consistent, then run the command “winmgmt /salvagerepository”


Ensure that DCOM is enabled
• Run Dcomcnfg.exe
• Click the Component Services node under Console Root
• Open the Computers folder
• For the local computer, right-click My Computer, and then click Properties
• For a remote computer, right-click the Computers folder, point to New and then click Computer
• Type the computer name, Right-click the computer name, and then click Properties
• Click the Default Properties tab
• Click to select (or click to clear) the “Enable Distributed COM on this Computer” check box
• Set Default Authentication Level to Connect
• Set Default Impersonation Level to Identify


If none of these steps resolve the issue, you can download the WMI Diagnosis Utility at http://go.microsoft.com/fwlink/?LinkId=158226.The WMI Diagnosis Utility is a VBScript script designed to help you troubleshoot the current state of the WMI service on a computer.

External Knowledge Sources
For more information on troubleshooting WMI problems, go to http://go.microsoft.com/fwlink/?LinkId=158224.

Blue Screen Death Of Computer (BSOD) - Causes & Troubleshooting

Blue Screen Death  Of Computer (BSOD) - Causes & Troubleshooting

A, (Blue Screen Death of Computer) (BSOD) technically called a STOP error, occurs when Windows suffers a serious error and is forced to "stop" completely.


BSOD errors can occur in any Windows operating system, including windows  10,Windows 8.1 ,Windows7, Windows vista , Windows Xp , and even Windows 98/95.


Since a blue screen error gives you no choice but to restart, troubleshooting one can be difficult. Fortunately, almost every STOP error includes a hexadecimal-based STOP CODE that can be used to research a fix.

Troubleshoot Blue Screen error (BSOD)

When you experience this type of error, you won't be able to see things like the Start menu or the taskbar on the screen when your PC is turned on. Instead you might see a blue screen with a message that your PC ran into a problem and needs to restart.
 
The most common error you will see codes: 0x0000000A, 0x0000003B, 0x000000EF, 0x00000133, 0x000000D1, 0x1000007E, 0xC000021A, 0x0000007B, 0xC000000F.

When did you see these errors in windows?

• While upgrading to Windows 10.
• After an update was installed. 
• While using my PC.
  

While upgrading to Windows 10
If you see a stop error while you are upgrading to Windows 10, setup will automatically go back to your previous version of Windows then follow these steps.

• Update your driver.
• Scan device performance and health.
• Run Windows Defender Offline.
• Remove software.
• Remove external hardware.
• Turn fast startup on or off.
• Start in safe mod.
  

Update your Drivers
Driver updates for Windows 10 and many devices are downloaded and installed through Windows Update. To update or reinstall drivers

Scan device performance and health
 Windows Defender periodically scans your device for potential problems. To see the results of the most recent scan, type “Windows Defender” on the search bar and select Windows Defender Security Center.

Run Windows Defender Offline
Windows Defender Offline scans your PC for malware.

Remove software
Some software can cause issues during an upgrade. Remove recently installed or unnecessary software.

Remove external hardware
Unplug unnecessary external hardware (printers, webcams, additional monitors, etc.) before upgrading.

Turn fast startup on or off
Sometimes, toggling the fast start-up setting can help resolve stop errors.

Start in safe mode
Safe mode starts Windows in a basic state, with a minimal set of files and drivers.

Error after an update is installed

• Some stop errors occur after a specific update or driver is installed on your PC. Fixing the error depends on getting to the desktop. 
• Stop error that lets you get to the desktop. 
• If you can get to the desktop, try uninstalling the update that's causing the error. You might need to uninstall more than one update if you don't know which one is causing the error. 
• In the search box on the taskbar, type View installed updates, and then select View installed updates. 
• Expand the window to see the installation date, and then select the update that you want to uninstall.Select Uninstall. 

 Remove software

• Remove recently installed or unnecessary software (for example, antivirus software from companies other than Microsoft) and see if that resolves the problem. 
• Remove external hardware.
• Unplug unnecessary external hardware (printers, webcams, additional monitors, etc.) before upgrading. 
• Stop error doesn't let you get to the desktop.  
  

 Start Windows in safe mode

• You can also start Windows in safe mode to uninstall recent updates. 
• If you have used Windows 10 for a while, you might have noticed that the "old ways" of booting into Safe Mode no longer work. By that, we mean trying things like pressing the F8 or the Shift + F8 keys on your keyboard while booting. These methods stopped working because the start procedure became faster than ever before. However, that doesn't mean that Windows 10 has no Safe Mode. It's just that to get to it you have to follow other procedures. Let's take a closer look and see all the ways you can get into Safe Mode in Windows 10.
  

In Safe mode

• When in safe mode on your PC, select the Start  button > Settings  > Update & security  > Windows update . 
•  Depending on the version of Windows 10 that's installed, do one of the following: 
•  In Windows 10 Version 1709 and later, select Update history > Uninstall updates. 
• In Windows 10 Version 1609, select Advanced options > View your update history > Uninstall updates.
  

Start in safe mode

• Safe mode starts Windows in a basic state, with a minimal set of files and drivers.